We have an edge router running NTP and I would like to restrict access to allow this router to sync to a remote time server.
If the remote ntp server is 220.127.116.11
and my router is 18.104.22.168
would this work:
access-list 20 permit 22.214.171.124
access-list 20 deny any
ntp access-group serve-only 20
Thanks for posting back and indicating that my suggestions worked as expected. It makes the forum more useful when people can read a question and can find confirmation that the ideas suggested were implemented and did work.
I am glad to see that you are a regular participant in the forum.